<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert title="只能设置第三级的选项的线管参数" type="warning" show-icon :closable="false"> </el-alert>

      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类:</span>
          <!-- 选择商品的级联选择框 -->
          <el-cascader v-model="selectedCateKeys" :options="cateList" :props="cateProps" @change="handleChange"></el-cascader>
        </el-col>
      </el-row>
      <!--  tab 页签选择区 -->
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加参数</el-button>
          <!-- 动态表哥 -->
          <el-table :data="manyTableData" border stripe>
                <!-- 展开航 -->
            <el-table-column type="expand">
             <template slot-scope="scope">
                <el-tag closable @close='handleClose(i,scope.row)' v-for="(item,i) in scope.row.attr_vals" :key='i'>{{ item }}</el-tag>
                <el-input
  class="input-new-tag"
  v-if="scope.row.inputVisible"
  v-model="scope.row.inputValue"
  ref="saveTagInput"
  size="small"
  @keyup.enter.native="handleInputConfirm((scope.row))"
  @blur="handleInputConfirm(scope.row)"
>
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <!-- 添加参数名称 -->
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <!-- 添加操作按钮 -->
            <el-table-column label="操作">
              <template slot-scope='scope'>
                <el-button size="mini" type="primary"  @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button size="mini" type="danger" @click ='removeParams(scope.row.attr_id)'>删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
        <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">静态属性</el-button>
         <el-table :data="onlyTableData" border stripe>
          <!-- 索引列 -->
          <el-table-column type="expand">
             <template slot-scope="scope">
                <el-tag closable @close='handleClose(i,scope.row)' v-for="(item,i) in scope.row.attr_vals" :key='i'>{{ item }}</el-tag>
                <el-input
  class="input-new-tag"
  v-if="scope.row.inputVisible"
  v-model="scope.row.inputValue"
  ref="saveTagInput"
  size="small"
  @keyup.enter.native="handleInputConfirm((scope.row))"
  @blur="handleInputConfirm(scope.row)"
>
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
          </el-table-column>
          <!-- 添加参数队列 -->
          <el-table-column type="index"></el-table-column>
          <!-- 添加参数名称 -->
          <el-table-column label="属性名称" prop="attr_name"></el-table-column>
          <!-- 添加操作按钮 -->
          <el-table-column label="操作">
            <template slot-scope='scope'>
              <el-button size="mini" type="primary" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
              <el-button size="mini" type="danger" @click="removeParams(scope.row.attr_id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>
    <!-- 添加动态参数的对话框 -->
    <el-dialog
  :title="'添加'+titleText"
  :visible.sync="addDialogVisible"
  width="30%" @closed="addDialogClosed">
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
    <el-form-item :label="titleText" prop="attr_name">
        <el-input v-model="addForm.attr_name"></el-input>
    </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
</el-dialog>
<!-- 编辑tag的对话框 -->
 <el-dialog
  :title="'添加'+titleText"
  :visible.sync="editDialogVisible"
  width="30%">
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" @click="editDialogClosed">
    <el-form-item :label="titleText" prop="attr_name">
        <el-input v-model="editForm.attr_name"></el-input>
    </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams">确 定</el-button>
  </span>
</el-dialog>

  </div>
</template>

<script>
export default {
  data () {
    return {
      // 存放商品数据
      cateList: [],
      // 级别选择框的对象
      cateProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      // 级联选择器选中后的数据
      selectedCateKeys: [],
      // 被激活的标签的名称
      activeName: 'many',
      manyTableData: [],
      onlyTableData: [],
      // 对话框开始关闭操作
      addDialogVisible: false,
      // 表单校验规则
      addFormRules: {
        attr_name: [{ required: true, message: '请输入参数名称', trigger: 'blur' }]
      },
      // 编辑对话框约束
      editFormRules: {
        attr_name: [{ required: true, message: '请输入参数名称', trigger: 'blur' }]
      },
      // 对话数据提交
      addForm: {
        attr_name: ''
      },
      // 编辑对话框数据
      editForm: {
      }
    }
  },
  computed: {
    isBtnDisabled () {
      if (this.selectedCateKeys.length !== 3) {
        return true
      } else {
        return false
      }
    },
    cateID () {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2]
      }
      return null
    },
    // 动态计算对象
    titleText () {
      if (this.activeName === 'many') { return '动态参数' }
      return '静态参数'
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    // 打开页面加载数据
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('失败')
      }
      this.cateList = res.data
    },
    // 级联选择器内容变化后
    handleChange () {
      this.getParamsData()
    },
    // tab 标签点击后的处理函数
    handleTabClick () {
      this.getParamsData()
    },
    // 获取参数的列表数据
    async getParamsData () {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
        this.manyTableData = []
        this.onlyTableData = []
        return this.$message.error('只能选中三级目录')
      }
      const { data: res } = await this.$http.get(`categories/${this.cateID}/attributes`, { params: { sel: this.activeName } })
      if (res.meta.status !== 200) {
        return this.$message.error('失败')
      }

      res.data.forEach(element => {
        element.inputVisible = false
        element.inputValue = ''
        if (!element.attr_vals) {
          element.attr_vals = []
        } else {
          element.attr_vals = element.attr_vals.split(' ')
        }
      })
      // console.log(res.data)

      if (this.activeName === 'many') {
        this.manyTableData = res.data
      } else {
        this.onlyTableData = res.data
      }
      console.log(this.manyTableData)
    },
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 对话框关闭
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 开启编辑对话 处理
    async showEditDialog (id) {
      // 查询当前用户的信息
      console.log(id)
      const { data: res } = await this.$http.get(`categories/${this.cateID}/attributes/${id}`, { params: { attr_sel: this.activeName } })
      console.log(res.data)
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数信息失败!')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 结束提交
    editParams () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(`categories/${this.cateID}/attributes/${this.editForm.attr_id}`, { attr_name: this.editForm.attr_name, attr_sel: this.activeName })
        if (res.meta.status !== 200) {
          return this.$message.error('修改参数失败')
        }
        this.$message.success('修改成功')
        this.getCateList()
        this.editDialogVisible = false
      })
    },
    // 点击按钮添加元素
    addParams () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(`categories/${this.cateID}/attributes`, {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName
        })
        if (res.meta.status !== 201) return this.$message.error('失败')
        this.$message.success('添加数据成功!')
        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    // 根据id删除对应视频参数性
    async removeParams (attrid) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 取消操作
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消了删除')
      }
      //
      const { data: res } = await this.$http.delete(`categories/${this.cateID}/attributes/${attrid}`)

      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.getParamsData()
    },
    // tag处理函数
    async handleInputConfirm (row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      // 否则
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue = ''
      row.inputVisible = false
      // 发起请求
      this.saveAttVals(row)
    },
    async saveAttVals (row) {
      // 发起请求
      const { data: res } = await this.$http.put(`categories/${this.cateID}/attributes/${row.attr_id}`, {
        attr_name: row.attr_name,
        attr_sel: row.attr_sel,
        attr_vals: row.attr_vals.join(' ')
      })
      if (res.meta.status !== 200) { return this.message.error('修改参数失败') }

      this.$message.success('修改参数成功')
    },
    // tag显示函数
    showInput (a) {
      a.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleClose (i, row) {
      row.attr_vals.splice(i, 1)
      this.saveAttVals(row)
    }
  }
}
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px 0px; // 上下， 左右
}
.input-new-tag {
  width: 120px
}
.el-tag{
  margin: 0px 10px;
}
</style>
